Web Development Roadmap
|
|-- Fundamentals
| |-- Web Basics
| | |-- Internet and HTTP/HTTPS Protocols
| | |-- Domain Names and Hosting
| | |-- Client-Server Architecture
| |
| |-- HTML (HyperText Markup Language)
| | |-- Structure of a Web Page
| | |-- Semantic HTML
| | |-- Forms and Validations
| |
| |-- CSS (Cascading Style Sheets)
| | |-- Selectors and Properties
| | |-- Box Model
| | |-- Responsive Design (Media Queries, Flexbox, Grid)
| | |-- CSS Frameworks (Bootstrap, Tailwind CSS)
| |
| |-- JavaScript (JS)
| | |-- ES6+ Features
| | |-- DOM Manipulation
| | |-- Fetch API and Promises
| | |-- Event Handling
| |
|-- Version Control Systems
| |-- Git Basics
| |-- GitHub/GitLab
| |-- Branching and Merging
|
|-- Front-End Development
| |-- Advanced JavaScript
| | |-- Modules and Classes
| | |-- Error Handling
| | |-- Asynchronous Programming (Async/Await)
| |
| |-- Frameworks and Libraries
| | |-- React (Hooks, Context API)
| | |-- Angular (Components, Services)
| | |-- Vue.js (Directives, Vue Router)
| |
| |-- State Management
| | |-- Redux
| | |-- MobX
| |
|-- Back-End Development
| |-- Server-Side Languages
| | |-- Node.js (Express.js)
| | |-- Python (Django, Flask)
| | |-- PHP (Laravel)
| | |-- Ruby (Ruby on Rails)
| |
| |-- Database Management
| | |-- SQL Databases (MySQL, PostgreSQL)
| | |-- NoSQL Databases (MongoDB, Firebase)
| |
| |-- Authentication and Authorization
| | |-- JWT (JSON Web Tokens)
| | |-- OAuth 2.0
| |
|-- APIs and Microservices
| |-- RESTful APIs
| |-- GraphQL
| |-- API Security (Rate Limiting, CORS)
|
|-- Full-Stack Development
| |-- Integrating Front-End and Back-End
| |-- MERN Stack (MongoDB, Express.js, React, Node.js)
| |-- MEAN Stack (MongoDB, Express.js, Angular, Node.js)
| |-- JAMstack (JavaScript, APIs, Markup)
|
|-- DevOps and Deployment
| |-- Build Tools (Webpack, Vite)
| |-- Containerization (Docker, Kubernetes)
| |-- CI/CD Pipelines (Jenkins, GitHub Actions)
| |-- Cloud Platforms (AWS, Azure, Google Cloud)
| |-- Hosting (Netlify, Vercel, Heroku)
|
|-- Web Performance Optimization
| |-- Minification and Compression
| |-- Lazy Loading
| |-- Code Splitting
| |-- Caching (Service Workers)
|
|-- Web Security
| |-- HTTPS and SSL
| |-- Cross-Site Scripting (XSS)
| |-- SQL Injection Prevention
| |-- Content Security Policy (CSP)
|
|-- Specializations
| |-- Progressive Web Apps (PWAs)
| |-- Single-Page Applications (SPAs)
| |-- Server-Side Rendering (Next.js, Nuxt.js)
| |-- WebAssembly
|
|-- Trends and Advanced Topics
| |-- Web 3.0 and Decentralized Apps (dApps)
| |-- Motion UI and Animations
| |-- AI Integration in Web Apps
| |-- Real-Time Applications

Web Development Resources 👇👇

Intro to HTML and CSS

Intro to Backend

Intro to JavaScript

Web Development for Beginners

Object-Oriented JavaScript

Best Web Development Resources

Join @free4unow_backup for more free resources.

ENJOY LEARNING 👍👍

SQL interview questions with answers 😄👇

1. Question: What is SQL?

Answer: SQL (Structured Query Language) is a programming language designed for managing and manipulating relational databases. It is used to query, insert, update, and delete data in databases.

2. Question: Differentiate between SQL and MySQL.

Answer: SQL is a language for managing relational databases, while MySQL is an open-source relational database management system (RDBMS) that uses SQL as its language.

3. Question: Explain the difference between INNER JOIN and LEFT JOIN.

Answer: INNER JOIN returns rows when there is a match in both tables, while LEFT JOIN returns all rows from the left table and the matched rows from the right table, filling in with NULLs for non-matching rows.

4. Question: How do you remove duplicate records from a table?

Answer: Use the DISTINCT keyword in a SELECT statement to retrieve unique records. For example: SELECT DISTINCT column1, column2 FROM table;

5. Question: What is a subquery in SQL?

Answer: A subquery is a query nested inside another query. It can be used to retrieve data that will be used in the main query as a condition to further restrict the data to be retrieved.

6. Question: Explain the purpose of the GROUP BY clause.

Answer: The GROUP BY clause is used to group rows that have the same values in specified columns into summary rows, like when using aggregate functions such as COUNT, SUM, AVG, etc.

7. Question: How can you add a new record to a table?

Answer: Use the INSERT INTO statement. For example: INSERT INTO table_name (column1, column2) VALUES (value1, value2);

8. Question: What is the purpose of the HAVING clause?

Answer: The HAVING clause is used in combination with the GROUP BY clause to filter the results of aggregate functions based on a specified condition.

9. Question: Explain the concept of normalization in databases.

Answer: Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity. It involves breaking down tables into smaller, related tables.

10. Question: How do you update data in a table in SQL?

Answer: Use the UPDATE statement to modify existing records in a table. For example: UPDATE table_name SET column1 = value1 WHERE condition;

Here is an amazing resources to learn & practice SQL: https://bit.ly/3FxxKPz

Share with credits: https://t.iss.one/sqlspecialist

Hope it helps :)

🚀 Roadmap to Become a C++ Developer 🔰

📂 Programming Basics
 ∟📂 Master C++ Syntax, Variables & Data Types
  ∟📂 Learn Control Flow, Loops & Functions
   ∟📂 Practice with Simple Programs

📂 Object-Oriented Programming (OOP)
 ∟📂 Understand Classes, Objects & Inheritance
  ∟📂 Dive into Encapsulation, Polymorphism & Abstraction
   ∟📂 Explore Templates & the Standard Template Library (STL)

📂 Memory Management & Pointers
 ∟📂 Grasp Pointers, References & Dynamic Memory Allocation
  ∟📂 Master Manual Memory Management
   ∟📂 Learn Smart Pointers & RAII Principles

📂 Data Structures & Algorithms
 ∟📂 Study Arrays, Vectors, Lists, Maps & Sets
  ∟📂 Understand Sorting, Searching & Recursion
   ∟📂 Solve Coding Challenges to Reinforce Concepts

📂 Tools & Build Systems
 ∟📂 Get Comfortable with IDEs (e.g., Visual Studio, CLion)
  ∟📂 Learn CMake & Other Build Tools
   ∟📂 Master Git & Version Control Systems

📂 Advanced C++ Concepts
 ∟📂 Explore Lambda Functions & Modern C++ Features
  ∟📂 Understand Multithreading & Concurrency
   ∟📂 Dive into Performance Optimization & Best Practices

📂 Debugging & Testing
 ∟📂 Learn Debugging Techniques & Tools
  ∟📂 Master Unit Testing with Frameworks (e.g., Google Test)
   ∟📂 Analyze and Optimize Code Performance

📂 Projects & Real-World Applications
 ∟📂 Build Complex, End-to-End C++ Applications
  ∟📂 Contribute to Open-Source Projects
   ∟📂 Showcase Your Work on GitHub & Portfolio

📂 Interview Preparation & Job Hunting
 ∟📂 Solve C++ Coding Challenges
  ∟📂 Master Data Structures, Algorithms & System Design
   ∟📂 Network & Apply for C++ Roles

✅️ Get Hired

React "❤️" for More 👨‍💻

Web Development Interview Questions for Freshers

1. What happens when you type a URL in your browser and press Enter?
Answer:

DNS lookup happens to find the IP address

Browser sends an HTTP/HTTPS request to the server

Server processes and sends back HTML/CSS/JS

Browser renders the page using its rendering engine


2. What is the difference between GET and POST requests?
Answer:

GET: Sends data in the URL, used for fetching data

POST: Sends data in the body, used for submitting data securely


3. What is a responsive website?
Answer:
A responsive website adjusts layout and design based on screen size and device (mobile, tablet, desktop), usually using CSS media queries.

4. What is the role of Webpack in web development?
Answer:
Webpack bundles JavaScript files, CSS, and assets into optimized output for faster website loading and better performance.

5. What is the purpose of async and defer in script tags?
Answer:

async: Loads script asynchronously and executes it immediately

defer: Loads script asynchronously but executes after HTML is parsed


6. What is the difference between localStorage and sessionStorage?
Answer:

localStorage: Stores data with no expiration

sessionStorage: Stores data until the browser tab is closed


7. What is CORS?
Answer:
CORS (Cross-Origin Resource Sharing) is a browser security feature that restricts cross-domain API calls unless the server allows it.

8. What is the difference between null and undefined in JavaScript?
Answer:

undefined: A variable declared but not assigned a value

null: A variable explicitly set to have no value


9. How do you optimize website performance?
Answer:

Minify CSS/JS

Compress images

Use lazy loading

Use caching

Reduce HTTP requests

Use a CDN


10. What is the DOM?
Answer:
DOM (Document Object Model) represents the structure of an HTML document as objects, which JavaScript can interact with to change content dynamically.

Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847